[Solved] ssh stopped working (connection refused)

ok some more info
- once logout out of ssh i then get the "connection refeused"
- doing a frimware update from file gives me ssh again (any frimware 4.2.19 - 4.2.21)
- logging out again breaks ssh (have to firmware reinstall)
- with a ssh session open first time i get connection refused on any other session
- googling and then looking at /var/log/auth.log with cat auth.log | grep ssh i get

 Aug 15 05:30:46 RIP-NAS sshd[2982]: Accepted password for root from 192.168.1.5 port 25553 ssh2
Aug 15 05:30:46 RIP-NAS sshd[3649]: (pam_unix) session opened for user root by (uid=0)
Aug 15 05:40:34 RIP-NAS sshd[5806]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key
Aug 15 05:40:34 RIP-NAS sshd[5806]: fatal: Missing privilege separation directory: /var/run/sshd
Aug 15 05:44:24 RIP-NAS sshd[6316]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key
Aug 15 05:44:24 RIP-NAS sshd[6316]: WARNING: /etc/ssh/moduli does not exist, using fixed modulus 

- Googling and adding sshd to /var/run/ with mkdir sshd, chmod 0755 sshd
- I can open a 2nd session and reopen 1st session but i get

 Aug 15 05:56:17 RIP-NAS sshd[2982]: syslogin_perform_logout: logout() returned an error
Aug 15 05:56:24 RIP-NAS sshd[7877]: error: Could not load host key: /etc/ssh/ssh_host_dsa_key
Aug 15 05:56:24 RIP-NAS sshd[7877]: WARNING: /etc/ssh/moduli does not exist, using fixed modulus
Aug 15 05:56:32 RIP-NAS sshd[7877]: Accepted password for root from 192.168.1.5 port 25809 ssh2
Aug 15 05:56:32 RIP-NAS sshd[7887]: (pam_unix) session opened for user root by (uid=0)

in the auth.log

do i need to do anything about "WARNING: /etc/ssh/moduli does not exist, using fixed modulus"??
i'll leave it for now and see how my ssh access goes on frimware 4.2.21